Water-gage.



PATENTED JUNE 18, 1907,

w E MG 3 E DG I BE E P am 8 7 5 8 0 N APPLICATION IILED JULY 28, 1906.. v

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A TTORNE Y5 rnvrrnn STATES- PATEN orrion WATER-GAGE.

Specification of Letters Patent.

Patented June 18, '1 907'.

Application filed July 28, 1906. Serial No. 328,256.

To all whom it may concern.-

Be it known that I, FRANK WALLACE LEI- DECKER, a citizen of the United States, residing at Marietta, in the county of Washington and-State of Ohio, have invented a new and useful Water-Gage, of which the following is a specification.

This invention relates to water gages, for boilers and the like, and has for its principal object to rovide a gage of simple constructionwhich may be readily taken apart for examination or repairs Without shutting down the boiler.

A further object of the invention is to provide a water gage having a valve member arranged to be closed by the fluid pressure from within the boiler and to provide a valve operating means which may be readily detached without permitting the escape of any steam or water.

A still further object of the invention is to provide a gage of this type in which they working parts, that'is tosay, the valve and its seat, are arranged in a section of a casing that is directly attached to the boiler, while the valve opening means is carried by a separate detachable section which may be removed without difficulty when it becomes necessary to examine the valve.

A still further object of the invention is to provide a device of this class in which a pair of separate valve members are employed, one eing arranged to close under steam pressure, and the other being movable to closed position by a valve stem or like memher.

A still further object of the invention is to provide a device of this class in which a pair of separate valve members are employed, and a movable member is arranged between them for the purpose of transmitting movement from one to the other.

A still furtherobject of the invention is to provide a water gage having a pair of separate valve seats and to arrange between them a movable member bywhich sediment or scale may be dislodged so as to maintain the water passage clear.

' A still further object of the invention is to provide a device of this class in which the valve operating stem acts as a reamer for the water passage.

A still further object of the invention is to provide a device of this class in which a pair of separate valve members are arrangedunder the control of a non-circular stem having same on the line 2.2 of Fig. 1.

struction and arrangement of parts, hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood'that various changes in the form, proportions, size and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings :Figure 1 is a sectional elevation of a water gage constructed in accordance with the invention. Fig. 2 is a transverse sectional view 01' the Fig. 3 is a similar view on the line 33 of Fig. 1. Fig. 4 is a detail sectional view on an enlarged scale of the valves and valve seats. Figs. 5 and 6 are similar views illustrating modifications of the valve and valve seat structure. Fig. 7 is a view corresponding to Fig. 3, illustrating a slightly modified form of valve stem.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawmgs.

The casing of the gage is divided into three sections 10, 11 and 12. The first section 10 is provided with a tapered thread 15 which screws into a threaded opening formed in the boiler shell, and is further provided with a cylindrical portion that eXtends well into the boiler and carries the valves. The section 10 has a wrench engaging member 16 so that it may be readily screwed into place, and is further provided with a female thread for the reception of the threaded end of the central section 11. This section 11 carries a downwardly extending nozzle 17 through which the water or steam may flow when the gage is open. The outer section 12 has a threaded connection with the outer end of the central section 11 and is provided with a threaded opening for the reception of the threaded portion of a valve stem 18, the lat:

ter carrying a handle 19 of any type for convenience in turning the stem and opening and closing the valve.

The inner portion of the section 10 is IIO pressure may be driven against its seat .20

when the stem is moved out, forming a tight joint and preventing the escape of any steam or water from the boiler, the structure being such that when in this position the central section 11 and outer section 12 of the gage may be readily detached without drawing the fires. The inner ball is held within the chamber 22 by a pin 27 which will prevent the ball from falling within the boiler.

In the outer valve chamber 23 is arranged a manually closed valve 28 which may, also, be of the ball type, this valve being engaged by the inner end of the stem 18 and being forced against its seat 21 by the turning of the stem.

In the small passage 24 between the two valve chambers is a ball 30 of smaller diameter than the passage and that serves as a means for communicating movement from one valve to the other. This intermediate movable member 30 will force the valve 25 from its seat when valve 23 is forced to closed position. Then the stem is moved outward, and valve 28 is free, the valve 25 is forced to its closed position by the pressure from within the boiler, and the intermediate member 30 then forces the valve 28 from its seat. By turning the stem 18 inward to a limited extent, both valves may be held from their seats, and a quantity of water or steam allowed to escape from the boiler. This intermediate movable member 30 by playing back and forth in the passage 24 serves to dislodge any sediment or scale, so that it may be washed out by the passage of the water or steam.

That portion of the central section 11 of the casing which carries the nozzle is provided with an inner bore 32 of small diameter, and an outer bore 33 of somewhat large diameter, and the outer bore serves as a guide and support for a cylindrical enlargement 35 at the inner end of the threaded portion of the stem. That portion of the stem extending inward from the enlargement 35 to the valve is non-circular in form in cross section and is provided with arelatively sharp edge or edges to serve as a reamer for the smaller bore 32 as the valve stem is turned, thus preventing the accumulation of sediment or scale. The stem may be square in cross section, as shown in Fig. 3, or it may be of any other form, a tri-angular form being illustrated in Fig. 7 so long as it presents one or more relatively sharp edges to serve as a scale remover.

In the construction shown in Fig. 5, the valves 25 and 28 are in the form of disks, and the intermediate member 30, which is placed between them, serves as a means for transmitting movement from one to the other.

In the construction shown in Fig. 6, the ball valves 25 and 28 are retained and the intermediate member 30 is in the form of a spider similar to the devices ordinarily emp oyed as valve stem guides or any other connecting means may be employed for the purpose of transmitting movement from one valve to the other, and ball, disk or other forms of valve may be employed without departing from the invention.

The device may be used to advantages in connection with pressure gages, gage gas to boilers or other reservoirs containing fluid under pressure, and which it may become necessary to remove or replace at any time.

I claim 1. In a device of the class described, a valve casing formed of a pair of detachable sections, the inner of which is arranged for connection with the boiler, and is provided with a valve seat, a loose valve movable under boiler pressure to closed position against the seat and serving to prevent the passage of fluid from the boiler when the outer section of the casing is detached.

2. In a device of the class described, a valve containing casing adapted to communicate with the boiler and having a pair of valve seats, a pressure closed valve movable against one of the seats, a second valve, manually operable means for moving the same against the other seat, and a loose member arranged between the valves and adapted to transmit movement from one to the other.

3. In a device of the class described, a casing having a pair of valve seats facing in opposite directions, respectively, a pair of valves, one of which is movable by pressure against its seat, a manually operable means for moving the second valve to its seat, and a loose ball arranged between the valves and serving as a means for transmitting movement from one to the other.

4 In a device of the class described, a casing having a pair of spaced valve seats and provided with a contracted passage way between the seats, a pair of ball valves one of which is movable against its seat by fluid pressure, a manually operable means for moving the other valve against its seat, and a loose member arranged in the contracted passage way and serving as a means for transmitting movement from one valve to the other.

- 5. In a device of the class described, a l valve casing including detachably connected cocks, and other devices whlch are connected outer section.

inner and outer sections, the inner section In testimony that I claim the foregoing as having a valve seat, a fluid pressure closed my own, I have hereto affiXed my signature I o valvedcarried by the inn? sectioir1 and arin the presence of'two Witnesses.

ran e to close a ainst sai seat an revent the esca e of flui d when the outer se ction is FRANK WALLACE LEIDEOKER' detache and a separate stem for closing said valve,' said stem being carried by the Witnesses:

MARIE H. OESTERLES, WINFIELD S. HANoooK. 

